HTML Pasta is described as 'Quickly and anonymously host your HTML for free. Up to 1 MB of HTML is allowed per paste' and is an website in the Development category. There are five alternatives to HTML Pasta, not only websites but also apps for a variety of platforms, including Android, iPhone, Console and Terminal. The best alternative is Rentry.co, which is free. Other great sites and apps similar to HTML Pasta are Txti (Free), Html Save (Free), pastehtml (Free) and Static Save (Free).
HtmlSave.com help you to save and host your HTML files online and give Rendered HTML link. This service is providing a simple playground for playing with HTML codes. This website is really helpful for testing how an HTML file will look in a browser.